There may be a variety of reasons why dogs develop thyroid nodules, including: Age factors: Older dogs are more likely to develop thyroid nodules because their body functions begin to decline. Genetic factors: Certain breeds of dogs are more likely to develop thyroid nodules, such as Chows, Poodles, etc. Environmental factors: Environmental factors may affect your dog's thyroid function, such as long-term exposure to toxic chemicals or radiation. Malnutrition: Lack of certain key nutrients in dogs can also lead to the development of thyroid nodules.
Autoimmune diseases: Autoimmune diseases may cause the dog's immune system to attack the thyroid gland, leading to the formation of nodules. If your dog shows symptoms of thyroid nodules, such as weight loss, loss of appetite, dry skin, etc., you should take your dog to the veterinarian for examination in time to determine the cause and treat it.